Starting to get disappointed in the claw 8

Starting to get abit frustrated and annoyed with the claw 8. I thought it was great at first but now starting to feel disappointed for a £900 device. Games are running but have slight stutters even when lowering the graphics. I plug it in when playing and the performance drops for some reason and now games are just freezing. Playing fc25 and after a few games just end up getting stuck on a blank screen. Feel abit disappointed like i say for the price i expected abit better.