Appreciate the response @goCoax, using different servers than the ones initially used above (Google Fiber, Atlanta GA) I'm now seeing higher upload speeds than before but with lower download speeds after tweaking the frequency bands and Last Operating Frequencies.
Server: Whitesky Communications LLC using D-Ext, D-Low & D-High @ 1150 LOF
Ping 5ms | Jitter 2ms | Loss 0%
Server: Georgia State University, Atlanta GA using D-Low @ 1400 LOF
Ping 5ms | Jitter 2ms | Loss 0%
Server: Pavlov Media, Atlanta GA using D-High @ 1400 LOF
Ping 5ms | Jitter 2ms | Loss 0%
I've tried with multiple sets of combinations and it seems to drastically affect up/down speeds. Any additional insight into suggested optimal operating frequencies would be greatly appreciated.