When I fire from crossbow game moves really fast for like 10x10 rounds so I am usually unsure where did that bolt go. Is there a way to slow it somehow?
Anytime you are slow (carrying too much, just fired a bow) versus normal movement in the game (speed 1.000) it will seem as though everything is moving quickly (ie your opponent(s) will swarm and repeatedly attack you).
Time is a series of instances, but an instance is more than just a unit of time. The period key "." is 10 instances, the comma key "," is one instance. In combat the passage of time is measured one instance after another and menu selections can change as each instance moves combat forward. Thus instances are then not just about time, but also about opportunity, and measuring speed.
The crossbow, like most weapons, has [ATTACK_PREPARE_AND_RECOVER:3:3] which is to say 6 instances, plus whatever number of instances reloading takes. Time will function as one block from when you fire to when you finish reloading (if you finish that is) and during that block of time, your opponents will perform their (normal speed?) actions in relation you/your slowness.
Slowing down this frenetic pace, is more about knowing what archery can do and what it can't do. If you want to play archer, which is less than efficient, but as many have said a flavor choice, knowing that the block of time from firing to reload will be long and unbroken and that there are only certain occasions to use archery. Some of these things are the same as they were from 34.11 and some not so much. The bow really should be used just from stealth against set piece scenarios. If I make a character who can carry the weight of bolts, I'll sneak versus a group of bandits and drop them with shots before going in to finish with melee, or versus titans that have web or breathe fire. There is never a reason to use a bow in a lair as the main benefit of ranged weapons is great distance, and the lair is a compression of space.