Since I installed Antergos on my HDD the UI/UX and general performance is too slow or bad on my machine. For example the every button is very unresponsive, animations are stuttering, the reaction time during browsing is way too long and light tools (e.g. Terminal, Nautilus etc.) take a few seconds to start.
But when I start the Antergos live CD from a (slow) USB flash drive everything is so smooth and fast.
How can I get this normal performance on my stationary HDD installation?
The hardware: 12 GB DDR3, Phenom II X4 955, Radeon HD 5770 (with the xf86-video-ati driver)
The desktop: Gnome 3.18 (formerly 3.16)
Since I have nearly no experience with Antergos/Linux I do not know where to start to solve this issue.
Please let me know if you need more software or hardware details.
Thanks in advance