packet manager "wait long" time before start downloading

from time to time i got long delay (few minutes), after i click install button in Package Manager.

is there any way to fix this ?
is this problem caused by my internet connection ?

i found UnityPackageManagerDiagnostics but in thered with this program i dont found any solution.

Code (Boo):

1. 4 out of 6 checks passed:
2. [
3.   {
4.     "name": "UPM registry reachable",
5.     "description": "Make an HTTP request to the UPM package registry",
6.     "result": "PASS",
7.     "detail": "HTTP/1.1 200 OK\nX-Powered-By: Express\nProvider: Genesis\nDate: Mon, 17 Feb 2020 14:41:11 GMT\nConnection: close"
8.   },
9.   {
10.     "name": "Ping UPM registry",
11.     "description": "Measure the latency of the UPM package registry API",
12.     "result": "WARNING",
13.     "detail": "4 pings made in 5.03 seconds\nAverage latency: 193.23 ms\nMinimum latency: 168.26 ms\nMaximum latency: 209.09 ms\nStandard deviation: 19.58"
14.   },
15.   {
16.     "name": "Ping UPM download",
17.     "description": "Measure the latency of the UPM package download endpoint",
18.     "result": "WARNING",
19.     "detail": "4 pings made in 6.261 seconds\nAverage latency: 104.96 ms\nMinimum latency: 84.91 ms\nMaximum latency: 118.59 ms\nStandard deviation: 14.91"
20.   },
21.   {
22.     "name": "UPM registry download speed",
23.     "description": "Test the Internet connection using the UPM package registry",
24.     "result": "PASS",
25.     "detail": "Measured speed to the UPM registry: 4.21 Megabits per second"
26.   },
27.   {
28.     "name": "Speedtest.net",
29.     "description": "Test the Internet connection using Speedtest.net",
30.     "result": "PASS",
31.     "detail": "Measured speed to the Speedtest.net server: 3.49 Megabits per second"
32.   },
33.   {
34.     "name": "HTTP proxy environment variables",
35.     "description": "Detect whether proxy-related environment variables are set (HTTP_PROXY, HTTPS_PROXY, ALL_PROXY, NO_PROXY, UNITY_PROXYSERVER, UNITY_NOPROXY)",
36.     "result": "PASS",
37.     "detail": "No proxy support has been configured through environment variables."
38.   }
39. ]

 

Sorry you are experiencing this delay. We are taking a look at it, thanks for reporting!