Dax(measure) optimization

Hello All,
Pleasew help me to optimize this DAX query. and please give me suggestion that can we change in into the column or not??

Target_Instance_type = 
VAR _cpu = 'Aggregated by VM'[cpu_instancmatch]
VAR _memory = 'Aggregated by VM'[m_memorymatch]
VAR tbl_memorymatch_bycpu =
    TOPN (
        1,
        CALCULATETABLE (
            'Price List',
            FILTER (
                'Price List',
                'Price List'[CORE] = _cpu
                    && 'Price List'[RAM (GB)Rounded] = _memory
                    && 'Price List'[Supported] = "YES"
            )
        ),
        'Price List'[INSTANCE NAME], ASC
    )
RETURN
    SUMMARIZE ( tbl_memorymatch_bycpu, [INSTANCE NAME] )

Location = 

var _region=CALCULATE(SELECTEDVALUE('Aggregated by VM'[region]))
var tbl_locationmatch=
TOPN(1,CALCULATETABLE('Regions_Location',Filter('Regions_Location','Regions_Location'[armRegionName]=_region) ),'Regions_Location'[location],ASC)

Return
IF(ISBLANK(SUMMARIZE(tbl_locationmatch,Regions_Location[location])),_region,SUMMARIZE(tbl_locationmatch,Regions_Location[location]))

Thankyou!