New MacBook Pro + Monitor = Slow Internet Speed

MoreThanMagic

Thread Starter
Joined
Mar 30, 2021
Messages
9
Hi,

I purchased a Macbook Pro in April (2021).

When I connect an external monitor (using a SergTECH adapter) my internet speed and connection becomes slow and or intermittent. If I remove the external monitor, but keep the adapter connected, speed is fine.

I've read similar complaints, and found this on apple's site: https://support.apple.com/en-us/HT201542

I have tried connecting to both 2g and 5g, neither makes a difference if the monitor is connected.

I'm not super close to the router, but my 10-year-old MBP works just fine, with or without a monitor (no adapter required).

I don't have full access or control over the router (renter, shared internet), but could access it if needed. Also, I'm usually the only one on the network during the day and it happens day or night.

Thanks for any thoughts or ideas!
 

Couriant

James
Moderator
Joined
Mar 26, 2002
Messages
41,768
When you say 'the speed/connection becomes slow', do you mean the web pages seem to take longer to load? have you tried a speedtest when you are connected to adapter?

What is the exact model of the adapter?
 

MoreThanMagic

Thread Starter
Joined
Mar 30, 2021
Messages
9
RE: do web pages seem to take longer to load?
>> Yes, or time out completely.

RE: have you tried a speedtest when you are connected to adapter?
>> Speedtest.net results:
with adapter and without adapter (no monitor): approximatley DL = 20 UP = 8.3-ish Ping = 34
with adapter and monitor: DL = 8.3 UP = 6.7 Ping = 36

I restarted before each test.

RE: What is the exact model of the adapter?
SERGTECH, HubPRO

Thank you!!

EDIT: Corrected my speed test results
 
Last edited:

MoreThanMagic

Thread Starter
Joined
Mar 30, 2021
Messages
9
Repeated the speed test after working for a while and having pulled the laptop out of sleep a few times...

DL = 3.49 / UP = 2.75 / Ping = 32
 

MoreThanMagic

Thread Starter
Joined
Mar 30, 2021
Messages
9
Any thoughts on this. It's maddening to have a brand new laptop and not be able to connect it to anything.
 

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