With the new season the game has for some become unplayable

I’ve played 600 hours of Legacy and love the game! It was running well and very responsive in season 1 and 2, but after the season 3 update its been straight upunplayable for me. The fps is lower, the latency and desync is way worse, and the stutters are onbearable - my screen commonly freeze for 0.2 sec when i start charging a fireball, jump, or double/triple evade. I know i have older hardware, but its been perfectly fine for season 1 and 2, and i have no issues in other games.
But the response feeling of inputs in the game is so so bad now, its a 100% impossible to input on reaction, it has to be a pretimed sequence to throw a combo and hope for the best. And its impossible to hit a moving target with fireball as theres a big delay from clicking the mouse till it actually throws, which was never a problem in season 1 or 2.

Below is before and after performance
I have: i7-6700K - GTX 1080 - 16GB RAM - (1080p)

Before:

• 80-100 stable fps. (with framegen)

• 20 ms - on EU

• FAA - 100% scale, 0.66 AA, Medium

• Graphics settings - Mix of low, medium, high

• Medium render distance

Now:

• 55-75 fps that drops to 40-50 in combat (fg=on)

  • But feels very muddy with fg (cursor glides after mouse stops)

• 45 fps without framegen

  • That drops to 20-40 in combat (but mouse dont glide)

• 60-70 ms - on EU

  • I’ve noticed the ms increases when fps lowers

• No AA - 80% scale

• Graphics settings - Everything lowest

• Near render distance

• Immense stutters in general (frame freezes for .1 - .2 sec)

I've updated GPU driver, verified game files, and put on performance Nvidia settings

The game has for me become unplayable in this season. It was not a problem before.