The test was on contact form without/with YiiBooster respectively. Both of cases without any cache, and for many times. Is it normal this behavior or may I do something wrong ? (I have tested and other actions too - they have the same results)
Or else – this worked for me – install the LESS extension, nodejs & lessc, then compile your CSS instead of letting the client process it. That way you can keep the debugging capability with a minimum loss of speed.
I did, without debug mode It’s much faster, If debug mode is disabled i dont see any differences (with or without booster). Also You can check if maybe asset manager force to copy assets every time You try to open any page.