Consistent increase in memory usage over time

Hi. I keep getting increase memory usage.
Im playing wow classic. This started about 2 weeks back. I have tried to reinstall wow, remove all addons, i have even tried to gi with directx11 in wow launcher.
Memory keeps increasing when i play, sometimes its at 800 and sometimes 3000.
This gives me lagg, and as maintank it can realy destroy our raids. I read all forums i can find. My game was good some weeks back, and i did not do any changes in wow. Think this came from a patch or something.
I have a i7 processor with gtx1060 and 16gig ddr3 ram

Download clean mem application it clears your memory see if it can help you while you figure this problem out.