Yes the delay will cause a drop in points. 

No idea if this applies to your situation but my old configuration resulted in what I believed to be an overheating network chip on my motherboard. I basically had an old FX processor burning away right above my GPU with the radiator against the rear fan space. Basically 3 big sources of heat surrounding the chip, and poor airflow against the motherboard. Eventually I changed a few things and put a fan as a top exhaust (removing a fan slot cover to do so) which I think helped a lot (its been a while now and that CPU died).
 
TLDR: Check your cooling and make sure you aren't baking your motherboard chips. If you're using the new Core 22 the increased heat output from the GPU might have pushed things over the edge.

GPU temps aren't the concern, its the part where all the air inside the case gets heated up but not exhausted fast enough to keep it from also heating up the motherboard on its way out. Some quick googling suggests ethernet controllers have operating temperature ranges up to 70C (notably lower than GPU or CPU) and you're not likely to have a temperature reading for it anywhere.
 
GPU temp being lower than previous model is good though. My only counter argument there is that the reference 2060 has a higher TDP than a reference 970: 160W vs 145W. Lower GPU temp just means the cooler is more efficient at transferring the heat from the Card into the air. But the core of my hypothesis is the hotter air is preventing the ethernet controller from cooling itself and so when it starts pushing out the bits it thermal throttles and cuts your upload speed.
 
My ultimate test would be to pop open the case when you're having the problem and feel how warm the air is around the IO ports. If its DEFINITELY warm, maybe turn up your exhaust fans and see if the problem goes away. If its kinda meh warm (I doubt its cool), then I guess its not temps and the mystery continues.

my last 6-7 work units (perhaps more) have all uploaded right away with no delay
as i hoped initially, i think it was a temporary issue communicating with the server
just have to hope that doesn't happen anymore
kinda shocking how fast the points melt away
my 2060 on windows is doing 750k ppd give or take
to make the 21 mil in a month there isn't much room for breaks, lost points or lost work units
so if i notice something, the first reaction is to panic of course
thx for ideas and suggestions.

phosgene2
another quick question about points if anyone reads this
do you get bigger bonuses with a continuous effort?
i started off the month and my client would show my points being anywhere from 380k ppd- maybe 700k with an avg around 600k give or take
i have been folding continuously since the beginning of the month and i noticed a big spike in points in the past 4 days
client shows ppd from 680k-880k most of the time and avg points the past 4 days is 750k
avg for the 4 days prior to that was 623k.
to the best of my knowledge i didn't change anything. is it just giving me bigger bonuses?
 
 

1) All WU are different
 
2) Faster completion does = more points
 
3) If you have too many Bad WU - you can loose Bonus points for a period of time
 
4) The Folding PPD displayed in the interface is an Estimate - based on current work with that WU at that time - "snap shot" & not particularly accurate
 
http://www.linuxforge.net/bonuscalc2.php
 
 

maybe i did something and i don't know what it was
i've been folding for a few months with this card
and it's kinda been 650k ppd or so output
my last 72 hours have averaged 807k ppd
so it's found a turbo gear or something. i haven't touched anything that i know of
so i was just curious why i would see this spike in output.
maybe it is just some work units that are optimized for my card
and it will revert to the mean (i.e. 650k ppd in my experience so far) soon
guess i'll enjoy it while it continues and see if it can hit the 21 mil goal for may.

ipkha
Every work unit is different and points just aren't consistent across project #s. This is the main reason for point differences. Also as newer versions of cores roll out the efficiency changes. There's just a lot of minor factors at play.

+1