He has NVidia - You have ATI
He has AMD - You have Intel
Sysinfo: Core 2 Duo E8500, ASUS P5Q PRO, 512 MB RADEON HD 4850 ASUS GDDR3, 4gb ram, 1920x1200 resolution. Windows XP 64bit. mIRC 6.35.
Allthough the issue is possibly related, it likely wouldn't be a hardware issue, and needs more investigation.
I'm not sure if this helps in any way, it's Process Explorer showing the 50 CPU usage while scrolling in mIRC:
If there's anything else I can do or try to resolve this issue somehow I'll be glad to do so.
I've been using mIRC for years and love it, but these CPU usage spikes and the lag makes it not exactly enjoyable anymore, I really hope this can be resolved somehow, whatever is causing it.
P.S.: My userlevel software setup is pretty much the same as it used to be on my previous PC.
Apart from mIRC I mainly constantly run Firefox, PUTTY, and COMODO Firewall, but as I said I used to use these before already, and stopping them didn't help either.