'top' shows now: top - 17:48:55 up 18:43, 4 users, load average: 1.49, 2.08, 2.74 Tasks: 269 total, 3 running, 266 sleeping, 0 stopped, 0 zombie %Cpu(s): 31.3 us, 3.3 sy, 0.0 ni, 65.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 7860496 total, 4597768 free, 2174860 used, 1087868 buff/cache KiB Swap: 12582908 total, 12127952 free, 454956 used. 5582128 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4978 rose 20 0 2415460 652552 42544 R 198.0 8.3 281:51.13 gnome-shell 4575 rose 20 0 690460 81184 53328 S 25.6 1.0 10:06.76 guvcview 4626 root 20 0 539072 154704 12024 R 20.6 2.0 39:40.70 X 5620 rose 20 0 1560824 478676 44384 S 17.9 6.1 85:30.06 firefox 5606 rose 20 0 71960 8436 7492 S 15.3 0.1 1:11.29 xclock_milli 5704 rose 20 0 741792 64396 9016 S 2.3 0.8 13:52.66 plugin-containe 14273 rose 20 0 284056 10436 7008 S 1.0 0.1 2:59.48 gkrellm 5219 rose 20 0 515364 28064 13288 S 0.7 0.4 0:58.00 gnome-terminal- sometimes 'top' shows even more than 230% for gnome-shell. Is this to expect?
Try on a new created user account and with a new home. Also disable all shell extensions
