Weird spots and thin leaves, help identifying?

I attached a few pictures of my the leaves, they have weird raised spots on maybe 10-15 different fan leaves. They plant is also growing VERY slow compared to my other one which is the same strain in the same conditions. Also, I the leaves are very think and slim, unlike my other plant. Any ideas what this could be?

Strain- GSC Extreme Auto
Soil-Organic super soil
Light- HLG 300v
Tent- 3x3

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Have you checked under the leaves and along the stems for pests?

Could possibly be burns on the leaves from water droplets under intense lighting. Are you misting or foliar feeding with lights all the way up?

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I see a few purple stems on the affected leaves . Could be a magnesium or phosphorus deficiency.
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Strain; Type, Bag seed, or NA

Soil in pots, Hydroponic, or Coco?
System type?

PH of runoff or solution in reservoir?

What is strength of nutrient mix? EC, or TDS

Indoor or Outdoor
Light system, size?

Temps; Day, Night

Humidity; Day, Night

Ventilation system; Yes, No, Size

AC, Humidifier, De-humidifier,

Co2; Yes, No

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