Long execution/mapping in QueryMultipleAsync with OFFSET / FETCH

Hi.
I came across a problem with QueryMultiple execution time. For jumping between pages it's all ok. But when I go to the last page (in this example is 52nd) response is after 20s, sometimes more. Whole query, without pagination, has 600 rows. No delays with Management Studio. Am I doing something wrong?

QUERY

select 
* 
from 
Documents 
where Type = @Type
and DocumentDate between @StartDate and @EndDate
order by Id desc
offset @Page rows
fetch next @Limit rows only;

select count(*)
from Documents 
where Type  = @Type
and DocumentDate  between @DateStart and @EndDate

CODE

var documents = new DocumentsResponse();

using (var db = _dbConnectionFactory.CreateCompanyConnection())
{
    using (var multi = await db.QueryMultipleAsync(query, new { Page = filter.Limit * filter.Page, filter.Limit, filter.Type, filter.StartDate, filter.EndDate }))
    {
        documents.Data = multi.Read<Document>();
        documents.DataLength = multi.ReadFirst<int>();
    }
}

return documents;

FIX - I have to separate the queries and then execute them

var documents = new DocumentsResponse();

using (var db = _dbConnectionFactory.CreateCompanyConnection())
{
   documents.Data = await db.QueryAsync<Document>(query1, new { Page = filter.Limit * filter.Page, filter.Limit, filter.Type, filter.StartDate, filter.EndDate }));
   documents.DataLength = await db.QueryFirstOrDefaultAsync<int>(query2, new { Page = filter.Limit * filter.Page, filter.Limit, filter.Type, filter.StartDate, filter.EndDate }));
}

return documents;

Environment
MS SQL Server 2019 Developer
Dapper 2.0.35

Start by reproducing the QueryMultipleAsync call from the issue with SQL Server 2019 and compare it with the separate QueryAsync and QueryFirstOrDefaultAsync calls. Inspect the two SQL statements, OFFSET/FETCH parameters, and Dapper 2.0.35 behavior to determine whether the delay is in SQL execution or mapping. Done means identifying a reproducible cause and documenting the responsible layer.