Question SSD slowdowns after copying a game

Dec 3, 2024
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Hi! Yesterday I decided to move a 140 GB game from an external HDD into my Intel 660p 512 GB SSD
I removed some files to ensure that there will be some space left after moving it, after removing said files there was about 170~ GB free in the drive
Then I started copying the game, noticed that after copying about 80 GB my laptop was a bit unresponsive
I checked task manager and seen that SSD response times were jumping around 500-2000 ms when the PC becomes unresponsive, then going back to normal 1-2 ms response times after a few secs
It kept repeating this during the whole copying progress and it would also slow down the copy speed to around 5 MB/s too

I decided to do some research and learned about SLC caches and all that, so I thought it should be normal as I probably used the whole 74~ GB cache this drive has...
I learned that during idle time the SSD should clear up the cache and work normally again, so I decided to leave my PC running without doing anything today
But said random unresponsive behaviour is still happening... like I'm just playing the game I copied, it runs fine for a while then once the drive starts doing some write process (most likely virtual memory stuff) whole PC gets unresponsive, game freezes and task manager shows 100% disk activity with high response times
Also, I tried copying a 6 GB folder within the drive, I noticed that it reaches about 600 MB/s speed then drops to 50 MB/s after 3 GB or so is copied... I tried copying the same folder over and over and sometimes it drops even under 1 MB/s... comes to full stop literally... response times get high again while that happens and then a few secs later it goes up to hundreds of MB/s speed again

How can I fix this issue?
There's currently 30 GB free space left on the drive, I'm planning to clear up more stuff till I get like 100 GB free, will that help?
Could this be related to said cache at all?

Also the SSD's terabytes written is about 13 TB right now in case if that would be a helpful info

Thanks in advance!
 

boju

Titan
Ambassador
Around 100GB should suffice. Windows explorer consumes around 20GB, and then pagefile on top of that, 30GB doesn't leave much for the ssd to perform well. Usual recommendation is 20% free space, 100GB for a 500GB drive. Not exact math regarding larger drives albeit 100~120GB across the board for any size drive should be fine.
 
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Dec 3, 2024
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Thanks a lot!
I'll try cleaning more files to get at least 100 GB free then, do I need to leave it running idle for a while after that for the SLC cache to clear?
If yes, how long should I leave it idle for?