clogged

adjectives

thickened or coalesced in soft thick lumps (such as clogs or clots)
"clotted blood"; "seeds clogged together"
stopped up; clogged up
"clogged pipes"; "clogged up freeways"; "streets choked with traffic"
loaded with something that hinders motion
"The wings of birds were clogged with ice and snow"-Dryden
is similar to
loaded to excess or impeded by a heavy load
"a summer resort...encumbered with great clapboard-and-stucco hotels"- A.J.Liebling; "a hiker encumbered with a heavy backpack"; "an encumbered estate"