I've been having issues also ever since Heavensward released. I get 5-15 90001 or 90002's each day now! I'm a performance engineer myself and have tested all my local hardware and haven't seen any general internet access problems.
ISP:
Time Warner, North Carolina, USA
Type of Internet Connection:
Wideband Cable
Internet Connection Speed:
50 mbps
C:\Users\Skye>tracert 199.91.189.74
Tracing route to 199.91.189.74 over a maximum of 30 hops
1 10 ms 9 ms 9 ms 192.168.0.1
2 33 ms 21 ms 20 ms cpe-24-163-64-1.nc.res.rr.com [24.163.64.1]
3 58 ms 52 ms 39 ms cpe-174-111-105-085.triad.res.rr.com [174.111.10
5.85]
4 19 ms 21 ms 30 ms cpe-024-025-045-104.ec.res.rr.com [24.25.45.104]
5 39 ms 29 ms 31 ms be31.drhmncev01r.southeast.rr.com [24.93.64.184]
6 45 ms 36 ms 39 ms bu-ether15.asbnva1611w-bcr00.tbone.rr.com [66.10
9.6.80]
7 30 ms 45 ms 36 ms 0.ae2.pr1.dca10.tbone.rr.com [107.14.17.204]
8 26 ms 45 ms 24 ms ix-17-0.tcore2.AEQ-Ashburn.as6453.net [216.6.87.
149]
9 51 ms 54 ms 66 ms if-2-2.tcore1.AEQ-Ashburn.as6453.net [216.6.87.2
]
10 61 ms 45 ms 57 ms 64.86.85.1
11 55 ms 59 ms 59 ms if-10-2.tcore1.TTT-Toronto.as6453.net [64.86.32.
33]
12 48 ms 59 ms 59 ms if-9-9.tcore1.TNK-Toronto.as6453.net [64.86.33.2
5]
13 58 ms 60 ms 59 ms if-7-2.tcore1.W6C-Montreal.as6453.net [66.198.96
.61]
14 59 ms 59 ms 59 ms 66.198.96.50
15 54 ms 63 ms 59 ms 192.34.76.2
16 58 ms 56 ms 52 ms 199.91.189.234
17 51 ms 49 ms 49 ms 199.91.189.74
Trace complete.
C:\Users\Skye>tracert 199.91.189.74
Tracing route to 199.91.189.74 over a maximum of 30 hops
1 3 ms 9 ms 16 ms 192.168.0.1
2 17 ms 19 ms 31 ms cpe-24-163-64-1.nc.res.rr.com [24.163.64.1]
3 54 ms 345 ms 39 ms cpe-174-111-105-085.triad.res.rr.com [174.111.10
5.85]
4 28 ms 29 ms 29 ms cpe-024-025-045-104.ec.res.rr.com [24.25.45.104]
5 27 ms 29 ms 29 ms be31.drhmncev01r.southeast.rr.com [24.93.64.184]
6 28 ms 39 ms 39 ms bu-ether15.asbnva1611w-bcr00.tbone.rr.com [66.10
9.6.80]
7 38 ms 29 ms 39 ms 0.ae2.pr1.dca10.tbone.rr.com [107.14.17.204]
8 38 ms 29 ms 39 ms ix-17-0.tcore2.AEQ-Ashburn.as6453.net [216.6.87.
149]
9 48 ms 51 ms 47 ms if-2-2.tcore1.AEQ-Ashburn.as6453.net [216.6.87.2
]
10 136 ms 59 ms 59 ms 64.86.85.1
11 54 ms 59 ms 68 ms if-10-2.tcore1.TTT-Toronto.as6453.net [64.86.32.
33]
12 45 ms 51 ms 48 ms if-9-9.tcore1.TNK-Toronto.as6453.net [64.86.33.2
5]
13 57 ms 59 ms 59 ms if-7-2.tcore1.W6C-Montreal.as6453.net [66.198.96
.61]
14 58 ms 59 ms 59 ms 66.198.96.50
15 115 ms 59 ms 60 ms 192.34.76.2
16 56 ms 59 ms 110 ms 199.91.189.234
17 56 ms 59 ms 66 ms 199.91.189.74