I had same problem, tried to go to a foundry mission and the loading screen was loading around 0.1% /s till approx 30% and then kicking me out, I closed the game after third try.
Edit: Also before today I patched 3 different maps, defera system, defera invasion zone and colony invasion, they all had around 4 files to be patched, took 2 minutes for each invidual file, total of 7 files and 12 minutes for colony invasion, arrived when it was completed. Atleast I got the fleet marks.
The patching was showing 0Bits/s and randomly showing some bits to be downloaded.
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