Question 64GB RAM 4000 lagging vs 32GB 3600

Jan 22, 2025
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Hello!

I upgraded my RAM from Corsair 32GB 3600mhz CL18 to Gskill 64GB 4000mhz CL18. (two sticks).

I do a lot of flight simulation and while in cruise I like to ALT+TAB out and do other things on the PC.

Coming from 32GB to 64GB I have noticed issues that I am unable to find a fix for.

After a while, the browser, Edge, or other Browser will display some sort of lagging, mostly half screen corruption where only half the screen is refreshed and the other half is "stuck" hitting F5 resolves it.

Additionally it will sometimes not register clicks, or only with several seconds of delay.

At the same time if I open Windows Media Player after a couple of seconds of any videos the video will stop and only the sound will play.

If I remove the XMP profile, the issue is almost the same.

Windows 11 reports 64GB RAM and 63,8 usable.

It tends to happen at around 34GB of RAM usage, sometimes less.

The Windows 11 internal RAM diagnostic tool could not find any errors.

Despite the laggyness the system seems stable, the game has no fps drops, there are no bluescreens or crashes.

However all of this did not happen on the old corsair RAM.

This is DDR4 and I think it would not make sense to buy another DDR4 again now to try and remedy.

Other specs:

Intel 13700k
Asrock Z790 PG lightning D/4 latest BIOS.
Radeon 6800XT 16GB