Well, as I like to find inconsistent bugs, I've found one of them! Out of about 12 rounds of planting the bomb, twice after having planted the bomb, I came out at crouch/walk speed. Pressing the crouch button didn't do anything either time, however, jumping then landing reset my speed to normal.

Was undead at the time. Calling it quits for now, will test more in the morning.

Also, is 100 the cheapest you can make it? This only gives me 8 rounds before I have to do an objective. Those seconds saved not waiting for the bomb to explode can really add up! But seriously, is 100 the cheapest, or was there some other reason for that number?