How long does it generally take to level around level 20-30?

I feel like i'm going really slow, mostly because I have to stop and regen after about every 4 monsters i kill. Any suggestions?

Try upgrading your items items every 5 or 10 levels

how longs it generally take?
depends
for 1-30
my mage - 1 hour
my paladin - 3 hours or so

but i have exceptional gear
i upgrade my attacking item (whtehr it be a charm or weapon) every 5 levels for 1-30 and it really helps alot
also try doing more catacombs , this is an easy way to hain levels, well helping others to gain levels

ohh okay ty for input