SSD read time extremely slow suddenly - What to do?

Do you have any realtime Virus scanning going on? Not sure of your OS, but there should be an option to "Exclude" folders that could speed things up.

First thing you want to do is to rule out possible causes.

So... what happens when you try to access other stuff from that SSD (so using other programs)? Is that going slow too or does that respond normally? Because if more files are being read slowly then it could hint at a possible hardware problem, but if this is only happening in some of the Komplete instruments / effects it could be caused by that...

So the second thing... in which instruments / effects does this happen?

How full is your SSD, Once they reach a certain level, they will slow down dramatically, 1TB, you will need about 120gb of free space so that it still operates at the same speed as it does when empty.

Yes, internal drives should have TRIM enabled, all the time!

Someone is completely wrong. A HDD can slow down if it is highly fragmented since the mechanical read head will have to move around quite a bit to read all the sectors for the file, but an SSD has no moving parts, it is all done electronically so there is zero impact of fragmentation. Defragmentation requires a LOT of read/write of data as it is moved so it is recommended (in fact almost required) to NOT defrag an SSD and never have it setup to auto-defrag. Windows 10 should automatically set that as off for you anyway but fragmentation is not the issue.

Unsure what the issue is but that sounds extremely slow for loading a library so something is going on there and it does not appear to be hardware related from those details.

Hello World!

I am having a similar issue with the loading times.

Here is my story PART ONE:

It is in no way acceptable that loading data from SSD to RAM runs with ~3MB/s while a backup to an external USB disk is even up to 100 MB/s.

If you have a SSD, run the "AS SSD Benchmark" - it gives you a hint how fast it can operate. Mine shows this:

I opened my OLD Kontakt and loaded "The Giant". I took the screenshot after Kontakt loaded ~25MB:

It took ~45seconds to load 25MB into the RAM - this is ridiculous! I looked at the lower graph for minutes and had an average rate of ~3MB/s. Imagine how long it took to fully load the 280MB. The 280MB is just the bit Kontakt needs in order to play any note in time when you start playing keys before it continues loading the rest of the sounds from disk.

I did the batch re-save on the "The Giant" folder, closed the OLD Kontakt and reopened it. It was there in no time, but somehow it was cached, because I did not see any SSD access (the graph remained at zero).

I then did a batch re-save on all other piano libs (Grandeur, Una Corda, Pearl Grand), closed the OLD Kontakt and started it again. The load times then (rough figures, there were peaks up to ~9MB/s):

The Giant: <1s (280MB)

Grandeur: ~3min, ~3MB/s, 530MB

Una Corda: , ~2min, ~3MB/s, 430MB

Now i tried the following. I started to load the Pearl and it behaved the same - even less than 3MB/s. Then I started to copy a few GB from the same drive to an external drive. While the copy job ran with up to 90MB/s, the loading of the Pearl continued to be slow.

Pearl Grand: , ~40s, ~3,5MB/s, 144MB

Hence, this batch re-save did not help me - and these libs are not the biggest. (Out of these pianos, the Pearl has 12GB in total. It would even fit into my RAM in it's entirety.)

Now I removed all instruments from Kontakt and loaded The Giant again. This time it was as slow as the others.

😌

end of PART ONE.

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My PC:

Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz (6 cores), 32GB RAM

System drive: Samsung SSD 840 EVO 120G SCSI Disk Device

Music drive: SanDisk SDSSDH3 1T00

NVIDIA GeForce GTX 1050 Ti

Windows Version 10.0.19044 Build 19044

Kontakt old: 5.8.1 R43

Kontakt current: 6.7.1

I have shut down my PC and I am starting on another day with a freshly booted PC.

So here is PART TWO of my story:

I am now changing to the current version of Kontakt (6.7.1). But before I do a batch re-save on th “The Giant” library, I am going to make a backup copy of the library.

1) Copy 4GB from MUSIC drive to MUSIC drive: over 10 minutes!

Interesting is the pattern of the transfer rate below. It speeds up to around 15MB/s and then falls down to below 3MB/s. And this pattern repeats independent from the file sizes. So here it is how windows is handling the copy process (have in mind that source and destination is the same MUSIC drive).

2) Copy 4GB from MUSIC to SYSTEM drive ~5 seconds.

Ultra fast - I did not expect this. Simple math gives me ~800MB/s, but my drive was benchmarked with ~261MB/s, so I believe, that some caching helped here to speed it up.

3) Copy  4GB from SYSTEM to MUSIC drive: ~5 seconds

Again ultra fast same as above.

Alright, I have a backup, now.

I will run Kontakt and load the giant piano

Lucky me, this time. The piano loads in no time and I can immediately play my keys. But I cannot explain why it is so fast today – may be Kontakt 6 is doing a better job than Kontakt 5 ? I am not convinced. As no batch re-save is necessary, I am going to load the other piano libs. Here all the results:

 The Giant:     <1s,                      188.58MB (280MB in K5)

 Grandeur:      ~3:45min, <7MB/s, 181MB  (500+MB in K5)

 Una Corda: ,  ~2:30min, <7MB/s, 150MB  (430 in K5)

 Pearl Grand: , ~1:00min, <7MB/s, 144MB

Again I am astouned: Kontakt 6 seems to load slower but displays a smaller amount of memory in the instruments information page:

I now closed Kontakt 6 and reopened it again. Loading the Giant was super fast – just two seconds.

I closed the giant and loaded the other three one after the other and all of them loaded superfast.

I now loaded a more recent instrument, the NOIRE piano. It loaded in 4 seconds and displayed 345MB in the instrument information.

Now to a lib, that I did not use in K6 yet.:

Session Horns: ~8min, 1320MB

Session Strings: ~3min, 248MB

Resume:

So a general behaviour I see / I assume:

1)  If a library has never been loaded or not used for a long time, Kontakt needs a long loading phase where it builds up a cache of all the beginnings of all the samples for every key and every velocity. Because these individual samples are spread across the big (2GB) library files, and because of so many samples, also for faster streaming later on, it memorises where to find the rest of a sample when a beginning has finished to play.

It seems to me that Kontakt 6 is keeping this cache better for later use, while Kontakt 5 declares parts faster as old and purges that data.

2)  Final test is to see how K5 / K6 behave after the next PC restart. Unfortunately after the restart of my PC K6 is again slow (~3MB/s) in loading the Giant piano and it takes 3min until it is ready. I opened Session Strings and Session Horns at the same time in on Instance of K6 and Session Horns does not even start to load – seems it waits for the other library to finish.

Wrap-Up:

I am now so unsatisfied and I ask everyone to help get more attention on this topic if you experience the same.

Lastly, if you have tips what can be done to get this issue solved, please speak up.

That’s it. Everybody: Don’t give up and make music J

Native-Instruments: Please help J

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My PC:

Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz (6 cores), 32GB RAM

System drive: Samsung SSD 840 EVO 120G SCSI Disk Device

Music drive: SanDisk SDSSDH3 1T00

NVIDIA GeForce GTX 1050 Ti

Windows Version 10.0.19044 Build 19044

Kontakt old: 5.8.1 R43

Kontakt current: 6.7.1