SSAS Tabular Model Process - Low Memory Error (Standard Edition)

This is the environment I work with:

1. Microsoft SQL Server 2017 Standard Edition (64-bit)
2. One database engine instance with 3 databases
3. One Analysis Services instance with 4 databases (Tabular model, average size of each database 3.9 gb)
4. Database engine and ssas are on same server.
5. Server has 256gb ram; 80gb allocated to database engine, 60 gb allocated to etl tool.

I read, if SQL Server is Standard Edition, it will assign a limited memory (15gb) to analysis service database. Also I can not create a new partition for one table. I wanted to create multiple partitions for one table and refresh/process only partition which has hot data. But I couldn't do that.

So unfortunately, I have to full process for each tables. If there is an option to achieve this?

Here are my steps to process:

1. When I try to deploy ssas tabular model via Visual Studio, it throws "low memory" error. I have 10 tables in my tabular model, so I filtered table queries to "select top 10". After that I deployed the model successfully.

2. After first step, I edited and removed "top 10" part from each tables partition in SQL Server Management Studio.

3. I extracted full process script for each partitions, created a linked server between database and ssas instance.

4. I created cursor to process partition of 10 tables. But I got an error "low memory".

Here is an example of process a partition.

   DECLARE @MyScript NVARCHAR(MAX) = '{"refresh":{"type":"full","objects":[{"database":"Dwh_Reports","table":"Fact Sales","partition":"Par_Fact_Sales"}]}}'

   EXEC (@MyScript) AT SSAS

To sum up, my questions;

• I have 4 databases on my ssas instance. That means, per instance uses 15gb memory and i have to allocate 60gb memory to ssas?

• My ssas instance configuration is default, I didn't change anything;

   Memory \ LowMemoryLimit       -> Value : 60
   Memory \ TotalMemoryLimit     -> Value : 80
   Memory \ VertiPaqMemoryLimit  -> Value : 60
   Memory \ VertiPaqPagingPolicy -> Value : 1
  

Do I have to change this configurations?