Need some help...

My 2005 BEW Jetta, has 201k miles, I live in Florida so the heat is crappy. When I am on idle or moving slowly the a/c does not blow as cold as anyone would want, but when I am on highway speeds, the a/c blows cold.....

I have heard/seen from a few things online that these cars accumulate leaves and junk in between the condenser and the radiator. Has anyone dealt with this before, I don't want to go crazy trying to figure things out when I could go right to the problem.

Please help me out with any videos or info you may have.