As a first step, 1s would be better than nothing for sure, but you need to be working towards a much tighter goal on a 1-2 year timeframe.
New load, you should really be hitting 200ms as your 95th percentile - 300ms or so would be decent still. "Transitions" should hit 100ms 95th, 150ms would be decent.
If you did hit 100ms across the board, you'd be rewarded by your customers/users psychologically considering the interactions as being effectively instantaneous. So it really is worth setting a super high bar as your target here (esp given you need a bit of breathing room for future changes too).
New load, you should really be hitting 200ms as your 95th percentile - 300ms or so would be decent still. "Transitions" should hit 100ms 95th, 150ms would be decent.
If you did hit 100ms across the board, you'd be rewarded by your customers/users psychologically considering the interactions as being effectively instantaneous. So it really is worth setting a super high bar as your target here (esp given you need a bit of breathing room for future changes too).