Slow response time when data is a string

I have a measurement with 255 timeseries and each of them contains a long string. When I run a simple query like this:

SELECT “3.V”,“3.Q” FROM data WHERE deviceId = ‘5’ and iobjectId = ‘3’ and time >= 1587810594000000000 and time < 1591083160000000000

It takes around 4 seconds to response. Is there any way to reduce the response time?

Hello @Ane,
Welcome!
How long are we talking? Can you please provide a length? Are these strings always in tags?
Thanks.

Hello Anaisdg,

They are around 230.000 characters strings and they are always saved as tags.

If you need anything else just tell me and I will answer you as soon as possible.