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32 Inch additional monitor texts get pixelated On Dell Core i7 laptop

Could you please help me with this issue? :
I’ve connected a 32-inch ASUS VG328H1V 165Hz monitor with my laptop. And the texts become pixelated. I’ve tried the following;

  1. Changing resolution
  2. Changing graphics setting

Is it something because of my laptop configuration? I’ve added a summary on my laptop configuration:

DELL Inspiron 15 5000 Laptop– i7- 10th gen
10th Generation Intel® Core™ i7-1065G7 Processor (8MB Cache, up to 3.9 GHz)
Windows 10
NVIDIA® GeForce® MX230 with 4GB GDDR5 graphics memory

Thank you very much for your kind reply.
Regards,
Mahruf Hussain